Fix lint error in narou-jsonp

[deflis]

Summary

• mark JSONP execute options parameter as intentionally unused while retaining interface compatibility
• ensure lint passes by voiding the unused ExecuteOptions argument

Testing

• pnpm run check:lint

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Codex Task

[Copilot]

Pull request overview

This PR adds support for passing fetch options (like custom headers or HTTP methods) to API calls by introducing an ExecuteOptions type parameter throughout the API surface. The main feature addition is accompanied by test infrastructure improvements (MSW mocking) and a lint fix for the JSONP implementation.

Key changes:

• Introduces ExecuteOptions type with fetchOptions?: RequestInit to enable custom fetch configuration
• Fixes lint error in narou-jsonp.ts by explicitly voiding the unused options parameter with interface compatibility comment
• Migrates narou.test.ts from external API calls to MSW mocking for more reliable and faster tests

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/narou.ts	Defines ExecuteOptions type and threads it through all abstract execute methods
src/narou-fetch.ts	Implements ExecuteOptions by passing fetchOptions to the fetch call
src/narou-jsonp.ts	Accepts ExecuteOptions for interface compatibility but voids it with explanatory comment
src/search-builder.ts	Updates execute() to accept and pass through ExecuteOptions
src/search-builder-r18.ts	Updates execute() to accept and pass through ExecuteOptions
src/user-search.ts	Updates execute() to accept and pass through ExecuteOptions
src/ranking.ts	Updates execute() and all executeWithFields() overloads to accept and pass through ExecuteOptions
src/index.common.ts	Exports ExecuteOptions type for public API consumption
src/index.ts	Changes error throwing from new Error(result) to raw result string
test/narou.test.ts	Migrates from external API calls to MSW mocking with server setup
test/narou-fetch.test.ts	Adds test coverage for fetchOptions parameter passing

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[Copilot]

This comment is now outdated. The tests no longer use external APIs since MSW (Mock Service Worker) is now being used to mock the API responses. Consider updating the comment to reflect that the tests now use mocked responses, or remove it entirely.

Suggested change

	// MEMO: このファイルのテストは外部APIを利用するため、結果が変わる可能性がある。
	// そのため、結果が変わる可能性が少ないものを選択してテストを行っているが、落ちるようになったら修正が必要。

[Copilot]

Throwing a raw string is not best practice. It's better to throw an Error object (throw new Error(result)) because Error objects provide stack traces and follow JavaScript/TypeScript conventions for error handling. The original code was correct in this regard.

Suggested change

	throw result;
	throw new Error(String(result));

[Copilot]

[nitpick] This comment about test timeout is likely outdated now that MSW mocks are being used instead of real external API calls. Mocked responses should be fast and deterministic, so the 30-second timeout may no longer be necessary. Consider reducing it to a more typical value (e.g., 5-10 seconds) or using the default timeout.

Suggested change

	// まれに時間がかかるので30秒に設定
	vi.setConfig({ testTimeout: 30000 });